Appliance for breaking metal nuts.



J. F. NORMAN.

APPLIANCE FOR BREAKING METAL NUTS. APPLICATION FILED JULY 22, 1913.

1,102, 1 62, Patented June 30, 191i 2 SHEETB BKIHT 1.

COLUMBIA PLANOCIRAPN 410-. WASHINGTON, D c.

J. F. NORMAN.

APPLIANCE FOR. BREAKING METAL NUTS. APPLICATION FILED JULY 22. 1913.

1,102, 162. Patented June 30,1914

2 8HEBTS-SHBET 2.

COLUMBIA PLANOUIAPII $0.. wnsnmo'rou. D. b

UNITED STATES PATENT onnron.

JOHN F. NORMAN, 0F LIMA, OHIO, ASSIGNO-R OF ONE-HALF TO CHARLES ERSHICK,OF

LIMA, OHIO.

APPLIANCE FOR BREAKING METAL NUTS.

Specification of Letters Patent.

Patented June 30, 1914.

Application filed. July 22, 1913. Serial No. 780,586.

To all whom it may concern.-

Be it known that I, Jonn F. Norman, a citizen of the United States,residing at Lima, in the county of Allen and State of Ohio, haveinvented new and useful Improvements in Appliances for Breaking MetalNuts, of which the following is a specification.

This invention relates to appliances for breaking metal nuts which arenot readily removable from their bolts, such a device having generalutility in various environments, being especially useful in the repairof freight cars.

The object of the invention is to provide a device for the purposestated having means whereby the breakage of the nut and its consequentremoval from the bolt may be accomplished quickly and with facility, andhaving its parts constructed to accommodate nuts of varying shapes andsizes.

The improved appliance is simple in its structural details and is ofsubstantial nature, whereby it will not be detrimentally affected byrough usage.

An embodiment of the invention is illustrated in the accompanyingdrawings, where- Figure 1 is a perspective view of the appliance; Fig. 2is a vertical cross sectional view thereof; Fig. 3 is a verticallongitudinal sectional view thereof; and Fig. 4 is a horizontalsectional view on the line 1-4 of Fig. 3, looking inthe direction of thearrow.

Similar characters of reference designate corresponding parts throughoutthe seve 'al views.-

The nut to be broken is supported upon a relatively heavy anvil 1,preferably in the form of an i'lpright oblong block and having at oneside thereof a handle 2 by means of which the appliance may be readilycarried in the hand. The breaking of the nut is accomplished by a cutteror chisel 3 and the nut is centered with relation to said cutter orchisel by a pair of jaws 4 associated with the upper face of the anvil1.

A bracket 5 is secured tothe anvil 1 and projects upwardly therefrom,this bracket being provided with horizontal webs 6 having openingsthrough which the chisel 3 is movable, and which, of course, guide saidchisel in its movements. The chisel 3 is held in a normal relation by anexpansive coil spring 7 which is arranged between the webs 6. The spring7 is preferably of tapering form and is secured at its center, as by acotter pin 8, to the chiscl, a coil of the spring passing through theeye of said cotter pin.

The bracket 5 includes a pair of checks 9 which lie adjacent the sidesof the anvil 1 and are secured thereto. The checks 1) are provided withlongitudinal slots 10 and a bolt 11 passes through a transverse openingin the anvil and through the slots 10, the bolt 11 being provided with ahead at one end and a wing nut 12 at the other end. The cheeks 9 areclamped against the sides of the anvil by tightening the nut 12, as isobvious, and in order that the bracket 5 may be positively held againstmovement relative to said anvil, the inner faces of the checks 9 and theadjacent faces of the anvil are provided with mating corrugations 13.The checks 9 have a certain measure of resiliency, and tend to springaway from the sides of the. anvil, and it follows that when the nut 12is turned to relieve the clamping pressure on the checks, the latterdisengage the corrugated sides of the anvil, thereby enabling thebracket 5 to be adjusted vertically with relation to the anvil, suchadjustment being provided for by the slots 10.

The vertical adjustment of the bracket 5 relative to the anvil is madein view of the diameter of the nut to be broken, in order that, as thediameter of the nut may be greater or less, the cutting edge of thechisel 3 may have a normally greater or less spacing from the upper faceof the anvil, the normal position of the chisel relative to the anviltherefore being selected to conform to the diameter of the nut. Theposition of the jaws -:t relative to one another may also be varied inaccordance with the diameter of the nut. The means for adjusting thejaws 4 preferably comprises a right and left threaded screw 1 1 whichpasses through a dovetail recess 15 formed t 'ansverscly in the upperface of the anvil and through the slots 10 in the cheeks 9, and lugs 16formed as parts of the jaws t and which are engaged with the respectiveright and left threads of the screw 141:. The lugs 16 are of dovetailoutline and fit conformably in the recess 15. To prevent the screw 14from having any play which might iterfere with the accuracy of theadjustment of the jaws 4;, a wing nut 17 is secured on one end of saidscrew, as by a cotter pin and an expansive coil 'end of the screw totake up loose play, and a chisel carried by the bracket.

8. An appliance for breaking metal nuts, comprising an anvil, a bracketupright therefrom and having a pair of cheeks which are held adjacentthe side faces of the anvil and are provided with longitudinal slots, abolt passing through the anvil and through said slots and having aclamping nut at one end thereof to hold the cheeks in locked relation tothe anvil, a pair of centering jaws associated with the upper face ofthe anvil, the anvil having a transverse groove in its upper face andthe jaws having lugs which engage in said groove, a right and leftthreaded screw disposed in the groove and having its oppositely directedthreads engaged with said respective lugs, the ends of the screwprojecting through the slots, a coil spring acting on one end of thescrew to take up loose play, and a chisel carried by the bracket.

9. An appliance for breaking metal nuts, comprising an anvil, a bracketupright therefrom, means for adjusting the elevation of the bracketrelatively to the anvil, a pair of nut centering jaws associated withthe upper face of the anvil, means for adjusting said jaws relatively toone another, and a chisel carried by the bracket.

10. An appliance for breaking metal nuts, comprising an anvil, a bracketupright therefrom, a pair of nut centering jaws associated with theupper face of the anvil and having a diverging relation, a chiselcarried by the bracket and movable along its axis,

the axis of the chisel being inclined relatively to the perpendicular,-and means for adjusting said jaws relatively to one another.

11. An appliance for breakin metal nuts, comprising an anvil, a bradketupright therefrom, a pair of nut centering jaws associated with theupper face of the anvil and having a diverging relation, a chiselcarried by the bracket and movable alon its axis, the axis of the chiselbeing inclined relatively to the perpendicular, means for ad justingsaid jaws relatively to one another, and means for adjusting theelevation of the bracket relatively to the anvil.

12. An appliance for breaking metal nuts, comprising an anvil, a bracketupright therefrom and having a pair of checks which are held adjacentthe side faces of the anvil and are provided with longitudinal slots,one of which extends to the lower edge of the check in which it isformed, a bolt passing through the anvil and through said slots andhaving a clamping nut at one end thereof to hold the cheeks in lockedrelation to the anvil, nut centering jaws associated with the upper faceof the anvil, and a spring held cutter carried by the bracket.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOHN F. NORMAN.

Witnesses A. D. MILLER, M. A. HoAcLANn.

copies of thin patent may he obtained for five cents each, by addressingthe Commissioner of Intent, Washington, D. G."

